高考英语语法核心考点专项复习11：状语从句

高考英语语法核心考点专项复习 11：状语从句 从句是学生们很头疼的一个难题，也是高考的必考点。其中包括名词性从句、定语 从句、状语从句。状语从句也是高考的重点，内容多、考点多。 本专题主要讲解状语从句的分类、连接词、考点，并配以习题练习。 概述：　状语从句在复合句中作状语。根据句子的含义，它可表示时间、地点、原因、目的、 结果、条件、行为方式、比较、让步等。状语从句通常由一个连词引导，有时由一个起连词作 用的词组引导。 目的：掌握从句的连接词和用法，能够识别出从句，学会分析从句的结构。 一、时间状语从句 (1)表示时间的状语从句可以由 when，whenever，as，while，before，until，ever since，as soon as 等词引导。 As a young man (＝When he was a young man)，he was fond of hunting.他年轻时，喜欢打猎。 When the rain stopped，students rushed out of the classroom. 雨停了，学生们冲出教室。 My mother was cooking while I was doing my homework. 我做作业时母亲在做饭。We were about to set off when it suddenly began to rain. 我们刚要出发，突然下起雨来。 It will be half a year before I come back. 我半年之后才回来。 (2)名词词组引导时间状语从句：every/each time 每一次；the moment/minute 那时(一…… 就……)；the first/second time 第一/二次；the last time 最后一次；the day 那一天；the week 那 一周等。 Every time I see him，he looks miserable. 每次我看见他，他都是一副愁眉苦脸的样子。 He said he’d phone you the moment he got home. 他说他一到家就给你打电话。 (3)as soon as，instantly，directly，immediately 等表示从句动作一发生，主句动作随即发生，通 常意为“一……就……”，也可引起表示时间的状语从句。 The moment I saw it，I fell in love with it. 我一看见它就爱上了它。 Directly I had done it，I knew I had made a mistake. 我一做完，就知道犯了个错误。 He rushed upstairs immediately he heard a loud noise. 他一听到大的响动就冲上了楼梯。 (4)no sooner...than 和 hardly...when 引导的从句表示“刚……就……”。主句中的动词一般用过去 完成时，从句用过去时。若把 no sooner，hardly 提到句首，主句须倒装。 No sooner had he sat down than the phone rang.他刚坐下，电话铃就响了。 Hardly had the game begun when it started to rain. 比赛刚刚开始，天就开始下起雨来。 二、条件状语从句 引导条件状语从句的从属连词有：if，unless (＝if...not 除非)，so/as long as (只要)，in case (万 一)，on condition that (条件是)，suppose/supposing (假设，如果)，provided that (如果)等。 Don’t come in unless I let you.别进来，除非我允许。 As long as you don’t lose heart，you will succeed. 只要你不灰心，你会成功的。 Suppose/Supposing (that) they refuse us，who else can we turn to for help？倘若他们拒绝我们，我 们还能向谁求助呢？ 三、原因状语从句 原因状语从句常用 because，since，as，for 引导，还可用 seeing that(既然)，now that(既然)， considering that/who/how...(考虑到……)，in that(因为)，not that...but that (不是因为……而是因 为)等引导。 Now that they’ve got to know each other a little better，they get along just fine. 由于彼此之间有了进一步了解，他们相处的不错。 John did quite well in his exams considering how little he studied.考虑到约翰才学了那么一点点， 他考得已很不错了。 The situation is rather complicated in that we have two managing directors.由于我们有两位总经理，所以情况很复杂。 四、让步状语从句 让 步 状 语 从 句 由 though(although) ， even if(even though) ， no matter how/where/what... ， whatever，however，whoever 等引导。 Although the car is old，it still runs well. 汽车虽然很旧，但跑起来仍然不错。 No matter how hard he tried，he couldn’t get her to change her mind.不管他怎样努力劝说，也没能 使她改变主意。 五、目的状语从句 目的状语从句常由 that，so that，in order that，lest(以免，以防)，for fear that 等引导，放在主 句之后。目的状语从句常用情态动词may(might)，can(could)等。lest，for fear that后面常用“(should) ＋动词原形”的虚拟语气。 We pray that he may recover soon. 我们祈求他早日康复。 六、结果状语从句 结果状语从句由 so that，so...that，such that，such...that 等词引导。 Many contestants later failed drug tests，so that the race had to be rerun.许多参赛者后来都没有通 过药检，赛跑只得重新进行。 The nature of the job was such that he felt obliged to tell no one about it.这种工作的性质就是如此，他觉得只好秘而不宣了。 七、方式状语从句 方式状语从句由 as，just as，as if，as though 等词引导。 We’d better leave things as they are until the police arrive. 在警察到来之前，我们最好保持现场原样。 You look as if you’ve had a good time. 你看起来好像玩得挺开心。 八、比较状语从句 比较状语从句由 as...as，than，not so...as，the more...the more 等词引导。 My brother is not as old as me.我弟弟年纪没我大。 It’s a beautiful dress but it’s much more than I can afford. 这件连衣裙很漂亮，不过太贵了。 九、地点状语从句 地点状语从句由 where，wherever，anywhere，everywhere 等词引导。 Make a mark where you have any doubts or questions. 有疑点或问题的地方你做个标记。(地点状语从句) We should go where the Party needs us most. 我们应到党最需要我们的地方去。Where there is a will，there is a way.有志者，事竟成。 Wherever there is smoke，there is a fire. 无火不生烟。(无风不起浪) Bamboo grows well where it has plenty of rain. 竹子在雨水充足的地方长得好。 If you could go wherever you wanted to in the world，where would you go？如果世界上任何地方 你想去就能去的话，你会去哪儿？ 各种状语从句分类及其连词一览表 类型 连词(词组) 时间状语从句 when，as，while，before，after，since，once，till/until，as soon as，hardly…when…，no sooner…than，the moment，immediately， directly, instantly, every time, each time, next time, the first time 原因状语从句 because，as，since(既然)，in that，seeing (that)，now (that)， considering (that) 地点状语从句 where，wherever 条件状语从句 if，unless，as long as，in case，supposing，on condition that， providing，provided (that), suppose (that)，only if类型 连词(词组) 让步状语从句 (as) though，even if/though，while，however，whatever，no matter… 结果状语从句 so…that…， so that, such…that… 目的状语从句 so that，in order that, in case, for fear that 方式状语从句 as，just as，as if/though 比较状语从句 as…as，than，the more…the more 学习状语从句应该注意的几个问题 状语从句考查热点在引导时间、地点、条件、让步、比较、原因、目的及方式状语从句的 连词及时态等方面。要选择正确的连词，需要正确理解句子的含义，准确判断主从句的逻辑关 系，同时还要注意区分词义相近的连词、介词和副词。在备考中，要注意以下四点： 1． 注意连词的选用 不同的状语从句使用不同的连词，有时同一个连接词可连接不同的从句，表示不同的意义。 如：Take your umbrella in case it should rain. 带上你的雨伞，以防下雨。(目的状语从句) In case there's a fire, what will you do first？万一发生火灾，你首先会做什么？(条件状语从 句， in case 通常在句首) 2． 注意主句和状语从句的时态 在时间、条件、让步等状语从句中，从句的时态往往有一定的限制。 一般来说，主句用 将来时，从句用一般现在时或现在完成时。如：I'll go if he invites me. You can't leave until you have done your homework. No matter what he does, he can't get praise from his father. 3． 注意倒装语序 not until…， no sooner…than…， hardly…when…等引导的句子，句子的主句部分的语序 需要作一些调整，而状语从句用正常语序。但是 as(引导让步状语从句)，no matter how 等，从 句部分的语序需要做些调整。如： No sooner had she got there than she called me up. (no sooner 所在部分使用了倒装结构) No matter how rich he is, he is not happy. Child as/though he was, he knew what was the right thing to do. 4． 注意状语从句的简化(紧缩现象) 有些表示时间、地点、条件、方式或让步的状语从句，如果谓语部分含有动词 be，主语又 和主句的主语一致(或相同)，或从句主语为 it，常把从句中的主语和谓语动词的一部分(特别是 be)省略掉。如： Look out for cars while crossing the street. He said that he would like to offer help if necessary. The inspector looked round, as if (he was) in search of something. 1． 【误】 In such dry weather, the flowers will have to be watered if they are going to survive. 【正】 In such dry weather, the flowers will have to be watered if they are to survive. 【解析】 if 从句中不能用表示将来的 will, be going to 等，但可以使用 if sb./sth. is to do sth. 结构。 2． 【误】 You will be late unless you will leave immediately. 【正】 You will be late unless you leave immediately. 【解析】 时间、条件、让步等状语从句中，用一般现在时表示将来意义。 3． 【误】 Stay there where you are. 【正】 Stay where you are. 【解析】 where 可以引导从句作地点状语，因此 there 是多余的，此句也可以是：Stay in the place where you are. 此时 where 引导的是定语从句。 4． 【误】 Mum would not let him buy it, as if he had enough money! 【正】 Mum would not let him buy it, even if he had enough money! 【解析】 从前后两个句子之间的逻辑关系可知，应用 even if。even if 即使；as if 好像。 5． 【误】 Not until I began to work I realized how much time I had wasted. 【正】 Not until I began to work did I realize how much time I had wasted. 【解析】 not until…置于句首时，主句应使用倒装。6. 【误】 I won't agree with no matter what you may say. 【正】 I won't agree with whatever you may say. 【正】 Whatever/ No matter what you may say, I won't agree. 【解析】 whatever 引导的从句作 agree with 的宾语，即作宾语从句，whatever 不能与 no matter what 替换。而引导状语从句时可替换，如第二句话。 课堂练习 1.时间状语从句 ①One Friday, we were packing to leave for a weekend away ______my daughter heard cries for help. A. after B. while C. since D. when 【解析】答案为 D。when 在句中表示“就在这时（突然）……”之意，它构成的固定句式是： be doing sth.／be about to do sth. ／had done sth….when…。句意：一个周五，我们正 在扛包裹动身去过周末，就在这时我女儿听到了呼救声。 ②If a lot of people say a film is not good, I won’t bother to see it, or I’ll wait _______ it comes out on DVD. A. whether B. after C. though D. until 【解析】答案为 D。句意：如果很多人说某部电影不好看，我也懒得去看了，或者等到出了 DVD 我再看。until 为“直到”的意思。 ③Please call my secretary to arrange a meeting this afternoon, or ______ it is convenient to you. A. whenever B. however C. whichever D. wherever 【解析】答案为 A。whenever 意为“无论何时”；however 意为“然而”；whichever 意为“任何一 个”；wherever 意为“无论哪里”。连接副词在后句中充当状语，根据语境可知是指时 间，选 A 项。句意：请打电话给我的秘书安排今天下午的会议，或者在你任何方便 的时候 。 ④As it reported, it is 100 years __________Qinghua University was founded. A. when B. before C. after D. since 【解析】答案为 D。 “It is + 时间段 +since + 从句（谓语为一般过去时）”为固定句型，故 答案选 D 项。句意：正如所报道的那样，自从清华大学建校以来已有 100 年的历史 了。 ⑤He had no sooner finished his speech _________ the students started cheering. A. since B. as C. when D. than 【解析】答案为 D。考查 no sooner…than.表示一……就; 根据句子意思“他的演讲一讲完学生 就 开 始 欢 呼 了 。 ”since 既 然 ； as 作 为 ； when 当 什 么 时 候 ； 类 似 的 还 有 hardly/scarcely…when…，这两个结构中 no sooner，hardly，scarcely 放在句首时句子 用倒装语序。如本句可以改为：No sooner had he finished his speech than the students started cheering. ⑥Mary made coffee ________ her guests were finishing their meal. A. so that B although C. while D. as if 【解析】答案为 C。so that 译为“以便”表示目的，although 译为“尽管，虽然”，as if 译为“好 像”，while 译为“当……的时候”，因此 while 符合句意，选择 C 项。句意：当客人们 将要结束用餐的时候玛丽才冲了咖啡。 ⑦Just use this room for the time being, and we’ll offer you a larger one _______it becomes available.A. as soon as B. unless C. as far as D. until 【解析】答案为 A。句意: 只是暂且使用这个房间。但是一有（as soon as）可以使用的房间， 我们就提供你一个大点的房间。 2.地点状语从句 ①Today, we will begin we stopped yesterday so that no point will be left out. A. when B. where C. how D. what 【解析】答案为 B。句意：今天，为了不遗漏要点，我们从昨天结束的地方开始。where 引导地点状语从句。 ②_____ unemployment and crime are high, it can be assumed that the latter is due to the former. A. Before B. Where C. Unless D. Until 【解析】答案为 B。Where 引导地点状语从句。句意：哪儿的失业率高，哪儿的犯罪就率高， 可以认为前者是导致后者的原因。 3.原因状语从句 The old man asked Lucy to move to another chair _______ he wanted to sit next to his wife. A. although B. unless C. because D. if 【解析】答案为 C。空格前后两个句子在逻辑意义上存在原因关系，所以用 because 引导原 因状语从句。Although 引导让步状语从句，unless 和 if 引导条件状语从句。句意：这 位老人叫露丝挪到另一把椅子上因为他想跟他妻子挨着坐。 4.条件状语从句①He had his camera ready ________ he saw something that would make a good picture. A. even if B. if only C. in case D. so that 【解析】答案为 C。in case 意为“以防，以免”；even if 意为“即使”；if only 意为“要是就好 了……”,so that 意为“为了，以便”。 句意：他准备好了相机以防看到可以拍摄的景物。 ②The little boy won’t go to sleep ______________his mother tells him a story. A. or B. unless C. but D. whether 【解析】答案为 B。or 译为“或者”表示选择，unless 译为“除非”表示条件，but 译为“但是”表 示转折，whether 译为“是否”，根据句意选择 B 项。句意：除非他的妈妈给他讲故事 这个小男孩儿是不会睡觉的。 ③— Our holiday cost a lot of money. — Did it? Well, that doesn’t matter you enjoyed yourselves. A. as long as B. unless C. as soon as D. though 【解析】答案为 A。as long as 意为“只要”；unless 意为“除非，否则”；as soon as 意为“一…… 就”；though 意为“虽然”。根据后一句为只要你玩得开心，花多少钱并不重要，就能 搞定答案。 ④—Shall we have our picnic tomorrow? —______it doesn’t rain. A. Until B. While C. Once D. If 【解析】答案为 D。 If 引导条件状语从句。句意：如果不下雨的话（我们就去野餐）。 5.让步状语从句①Try she might, Sue couldn’t get the door open. A. if B. when C. since D. as 【解析】答案为 D。题目中前半句说，她试过；后半句说 Sue 不能打开门，明显前后两个句 子意思相反，所以选择 D。as 表示“虽然”，引导让步状语从句。句意：虽然她试了， 但还是无法打开门。 ②________volleyball is her main focus, she’s also great at basketball. A. Since B. Once C. Unless D. While 【解析】答案为 D。根据主句内容可知，她也擅长打篮球，由此可知排球是她的强项，故选 while 引导让步状语从句。 ③Frank insisted that he was not asleep _________I had great difficulty in waking him up. A. whether B. although C. for D. so 【解析】答案为 B。whether“是否”，常与 or 连用；although“尽管，虽然”，引导让步状语从 句；for 用来引导因果并列句；so“因此，所以”，引导因果并列句。根据句意可知， 空格前后为让步关系，故答案为 B 项。句意：尽管我费了很大劲才把弗兰克叫醒， 他却坚持说自己没有睡着。 ④________all of them are strong candidates, only one will be chosen for the post. A. Since B. While C. If D. As 【解析】答案为 B。while 的意思是“虽然, 尽管”, 相当于 though 或 although。句意：虽然他 们都是强有力的候选人, 但只有一个人被选中担任这个职务。 ⑤To show our respect, we usually have to take our gloves off ______ we are to shake hands with. A. whichever B. whenever C. whoever D. wherever 【解析】答案为 C。句意：为了表示我们的尊敬，无论与谁握手，我们通常得摘下手套。shake hands with sb. 意为“与某人握手”，本句中的 with 后缺少宾语，结合句意选 C 项，whoever 在句中引导让步状语从句。 ⑥The engineer are so busy that they have zero time for outdoor sports activities, _____they have the interest. A. wherever B. Whenever C. even if D. as if 【解析】答案为 C。句意：工程师们都很忙，以至于他们没有什么时间去做户外运动，即使 那是他们感兴趣的。wherever 无论何处，whatever 无论什么，even if 即使，as if 似 乎、仿佛。根据句子的意思选 C 项。 6.目的和结果状语从句 ①The police officers in our city work hard _________the rest of us can live a safe life. A. in case B. as if C. in order that D. only if 【解析】答案为 C。句意：警察努力工作是为了让我们过上安全的生活。in order that 含义为 “为了”，引导目的状语从句。 ②The Great Wall is _______ tourist attraction that millions of people pour in every year. A. so a well-known B. a so well-known C. such well-known a D. such a well-known 【解析】答案为 D。such a + 形容词+名词+that 从句，相当于 so +形容词+名词+that 从句， 表示“如此……以至于……”的意思。A 选项若改为“so well-known a”也对。答案 D 项。 7.比较状语从句 The new stadium being built for the next Asian Games will be _________the present one. A. as three times big as B. three times as big asC. as big as three times D. as big three times as 【解析】答案为 B。此处用到了 as…as…句型，其中用原形，表倍数的数次位于前一个 as 之 前，故选 B。其余选项与题意不符。句意：正在为下届亚运会所建的体育馆是现在的 体育馆的三倍大。 8.方式状语从句 Jack wasn’t saying anything, but the teacher smiled at him _______he had done something very clever. A .as if B. in case C. while D. though 【解析】答案为 A。as if 意为“似乎，好像”，引导方式状语从句。句意：Jack 什么也没说， 但老师向他笑了笑，好像他做了件聪明的事情一样。 ①Taiwan was attacked by such a terrible hurricane ________few citizens had ever experienced before. A. as B. and it was C. that D. which 【解析】答案为 A。此题容易选择 C 项，然而该句是定语从句，因先行词被 such 限定，所以 关系代词用 as。如果用 that，则后面的这个从句应该判定为结果状语从句，但句子成 分不齐全。 ②It was five o’clock in the afternoon _____ they climbed up to the top of the mountain. 　A. since 　 B. when C. that 　 D. until 【解析】答案为 B。 此句为一主从复合句。when 引导状语从句；若看作强调结构，应在 five 前加 at。 ③—Where did you get to know her？—It was on the farm 　　　we worked. A. that B. there C. which D. where 【解析】答案为 D。the farm 为先行词，where 为定语从句中的关系副词，作地点状语。答语 中是强调句的省略：It was on the farm where we worked that I got to know her. ③Is it only on the world market ________we can prove the competitiveness and quality of our goods? A. where B. which C. that D. how 【解析】答案为 C。此句是强调句的疑问句形式。1.Please arrange an interview with the manger tomorrow, or it is convenient to him. A. whenever B. however C. whichever D. wherever 【答案与解析】A 句意：请明天安排一次对经理的采访，或者是他方便的任何时间。本句的 后半句句子完整，所以应该使用连接副词，结合句意可知应选 A 项。 2.—Hello. Can I speak to Mr. Brown? —I'm sorry, but it is 3 weeks ___ he worked here. A. before B. since C. after D. while 【答案与解析】B “It’s +时间段 since+ 主语+一般过去时”为固定句式。语境为：他在这里工 作已经有 3 个星期了。 3.Few people paid full attention to their health conditions__________ they were seriously i11. A. when B. if C. until D. after 【答案与解析】C 句意：直到人们病的厉害的时才完全注意自己的身体状况。not….until“直 到…才”，句中的否定词是 few。 4.I can not understand why Libya will become so complicated ________ I understand more from the medium. A. after B. before C. while D. when 【答案与解析】B 句意：在我从媒体了解更多的信息之前，我不明白为什么利比亚的形势会 变得如此复杂。也就是说，他是在通过媒体了解了更多的信息之后才理解 的。befroe 意为“在……之前”，符合语境。 5.It’s quite a time ______ Yao Ming got injured, but it won't be long ______ he returns to the court. A. since; before B. after; when C. before; since D. that; when 【答案与解析】A 本题考查了两个固定结构：It is/has been＋一段时间＋since 引导的时间状 语从句(自从做某事已经有多长时间了)；It will be/is/was＋一段时间＋before(多久之后才……， before 引导时间状语从句)。 6.Such a scene can be seen frequently 　 　 　 　 people live in peace and enjoy a very happy interpersonal relationship. A. there B. which C. in the place D. where 【答案与解析】D 句意：这种场景在人们能和睦相处、有愉快的人际关系的地方经常可以 看到。Where 在句中引导地点状语从句。解题的关键在于正确分析句子结构， 如果用定语从句则应为 in the place where。 7. If you are traveling the customs are really foreign to your own, please do as the Romans do. A. in which B. what C. when D. where 【答案与解析】D。where 引导的是地点状语从句。本题考生容易误选 in which 认为是定语从 句。 句意：如果你在一个对你来说风俗非常陌生的地方旅行的话，请入乡随俗。 8. ______ you are familiar with the author's ideas, try reading all the sections as quickly as possible. A. Now that B. Ever since C.In case D. As long as 【答案与解析】A 考查连词辨析。Now that 既然。句意为：既然你对作者的观点这么熟悉， 那就尝试着用最快的速度阅读各个章节吧。ever since 从……起；in case 以防，万一；as long as 只要。 9.China’s housing price becomes one of the hottest topics during the Two Sessions, ________most ordinary Chinese people find it more and more difficult to buy a flat in cities. A. where B. so C.as D. though 【答案与解析】B 句意：中国的房价成为两会最热点的话题之一，因为普通的人在城市买套 房越来越难。根据句意选 B。9.I usually take something to read when I travel by train I feel bored. A. as if B. so that C. in case D. even though 【答案与解析】C in case 以防。句意为：坐车的时候，我通常带些东西去读，以防感到无聊。 10.— Have you made any plan for the coming Spring Festival? —I don’t mind what to do there's less homework from the teachers and more pocket money from my parents. A. as long as B. as far as C. now that D. in order that 【答案与解析】A 答语的意思是：我不介意做什么，只要是老师少留点作业，爸妈多给些 零花钱就可以了。 11. bad weather stops me, I take exercise outdoors every morning. A. Unless B. Since C. If D. Though 【答案与解析】A 由语境可知，这里表达的意思是：除非恶劣的天气阻止我，我每天窦进 行户外锻炼。 12.The engineers are so busy that they have no time for outdoor sports activities, ______ they have the interest. A. wherever B. as if C. even if D. whenever 【答案与解析】C 根据句意选择 C，even if“即使，尽管”引导让步状语从句。那些工程师如 此忙以至于他们没有时间参加户外体育活动，尽管他们很感兴趣。wherever 无论在哪；as if 好像，似乎；whenever 不论什么时候。 13.Hard ______ my brother studied, he wasn't qualified enough for a good university. A. although B. while C. when D. as【答案与解析】D 句意：尽管我弟弟学习很用功，但是没有进入一家好的大学学习。该句中 副词 hard 提前，使用了一个倒装结构，所以只能用 as。although 和 while 也 可以引导让步状语从句，但是没有倒装这一用法，故选 D。 14.It is easy to be thankful for the good things, ______ a life of rich fulfillment comes to those who are also thankful for the setbacks. A. that B. which C. while D. when 【答案与解析】C 句意：对美好的事物感恩很容易，然而，硕果累累的人生属于那些对挫折 也心存感激的人。此处 while-意为”然而”，表示对比。 15.Cynthia is not ashamed of what she does, ______ she ends up doing something wrong. A. as though B. in case C. even if D. for fear 【答案与解析】C even if “即使”，引导让步状语从句。语意：Cynthia 从来不为自己的行为感 到羞愧，“即使”是她做错了事情。 16._______ there is no law stating how you may dress, not all fashions are respectable. A. Because B. Since C. While. D. Unless. 【答案与解析】C 考查连词的用法。句意：尽管没有法律规定你怎样穿戴，但是并不是所有 的时尚都是值得尊敬的。while“尽管”；because“因为”；since“既然”；unless“除 非”。while 符合题意。 17.—The experiment is of particular importance. . —I see. We will carry on with it ____ we can get enough money. A. unless B. whether C. though D. until 【答案与解析】B 句意：——这个实验特别重要。——我明白。无论我们能不能得到足够的 钱，我们都会继续进行下去。whether…or not 在句中引导让步状语从句，表 示“不管；无论”。18.______ regular exercises is very important ,it’s never a good idea to exercise too close to bedtime. A. If B. As C. Although D. Unless 【答案与解析】C 尽管我认为有规律的训练重要，但是睡前训练绝不是一个好主意。所以选 although。 19.Goals have to be realistic(现实的) students can reach them and feel a sense of achievement. A. so long as B. so that C. now that D. even though 【答案与解析】B 空格后的句子是空格前句子的目的，所以用 so that，句意为：目标应该现 实一点，这样学生们就能实现，并有成就感。 20.Last term our maths teacher set so difficult an examination problem none of us worked it out. A that B as C so that D which 【答案与解析】A so…that 引导结果状语从句。如果要选 B.as 的话，要将后面的 worked it out 中的 it 删除才对。 21.—What do you think of French? —In my opinion, French is _______English. A. a subject so difficult as B. as a subject difficult as C. as difficult a subject as D. difficult as subject as 【答案与解析】C as…as 同级比较句型。第一个 as 为副词，所以用其后要直接跟副词或形 容词。第二个 as 为连词，引导比较状语从句。句意：法语和英语一样难。 22.The man we followed suddenly stopped and looked _____he was seeing whether he was going in the right direction.. A so long as B. even if C. as soon as D. as if【答案与解析】D。as if 引导方式状语从句。 23.Taiwan was attacked by such a terrible hurricane _______few citizens had ever experienced before. A. as B. and it was C. that D. which 【答案与解析】A　此题学生们容易选择 C 项，然而该句是定语从句，因先行词被 such 限定， 所以关系代词用 as。如果用 that，则后面的这个从句应该判定为结果状语从 句，但句子成分不齐全。 24.QQ, you can chat with your friends, makes communication easy. A. as B. which C. that D. where 【答案与解析】D 此处 QQ 作为一个抽象的地点，其后是 where 引导的非限制性定语从句。 25. It is in this very village, Mary was born 35 years ago, she will build her first school, inspires everyone to help her . A. where; that ; which B. that ; that ; that C. that ; when ; which D. where ; when ; that 【答案与解析】A where 引导定语从句，that 引导强调句，which 引导定语从句修饰前面的句 子。